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DATA SHEET
SMP1345-087LF: Surface Mount PIN Diode
Applications
Switches
Attenuators
Features
Low-series resistance: 2 Ω maximum @ 10 mA
Low total capacitance: 0.2 pF maximum @ 5 V
QFN (2 x 2 mm) package (MSL1, 260 °C per JEDEC J-STD-020)
Description
The SMP1345-087LF is a surface mountable PIN diode suitable
for use in an RF switch or attenuator circuit.
Maximum resistance at 10 mA is 2 Ω and maximum capacitance
at 5 V is 0.2 pF. The combination of low capacitance, low parasitic
inductance, and nominal 10 μm I-region width, makes the
SMP1345-087LF useful in large signal switches and attenuator
applications.
The device has a 0.5 W dissipation power rating, which makes it
capable of handling up to 40 W Continuous Wave (CW) and 440 W
peak (1 μs pulse, 1% duty cycle) in a series-connected
transmit/receive (T/R) switch.
Design information for high power switches may be found in the
Skyworks Application Note, Design With PIN Diodes (document
number 200312).
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
201546E • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • June 18, 2013
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DATA SHEET • SMP1345-087LF SURFACE MOUNT PIN DIODE
Table 1. SMP1345-087LF Absolute Maximum Ratings
Parameter
Symbol
Minimum
Maximum
Units
Forward current
IF 200 mA
Dissipated power @ 85 °C
PD
0.5 W
Operating temperature
TA
55 +150
°C
Storage temperature
TSTG
55 +200
°C
Junction temperature
TJ
55 +175
°C
Electrostatic Discharge, Human Body Model (HBM), Class 1B
ESD
*** TBD ***
V
Note: Exposure to maximum rating conditions for extended periods may reduce device reliability. There is no damage to device with only one parameter set at the limit and all other
parameters set at or below their nominal value. Exceeding any of the limits listed here may result in permanent damage to the device.
CAUTION: Although this device is designed to be as robust as possible, Electrostatic Discharge (ESD) can damage this device. This device
must be protected at all times from ESD. Static charges may easily produce potentials of several kilovolts on the human body
or equipment, which can discharge without detection. Industry-standard ESD precautions should be used at all times.
Table 2. SMP1345-087LF Electrical Specifications (Note 1)
(TA = +25 °C, Unless Otherwise Noted)
Parameter
Symbol
Test Condition
Forward voltage
VF IF = 10 mA
Reverse leakage current
IR VR = 50 V
Series resistance
RS f = 100 MHz
IF = 10 mA
IF = 1 mA
Total capacitance
CT1 f = 1 MHz
CT5 VR = 1 V
VR = 5 V
Minority carrier lifetime
TL IF = 10 mA
I region width
W
Thermal resistance (Note 2)
θJC
Note 1: Performance is guaranteed only under the conditions listed in this Table.
Note 2: Measurement based on a thermal resistance of 92 °C/W for the junction-to-bottom of circuit board.
Min
Typical
0.89
1.5
3.5
0.17
0.16
100
10
77
Max
10
2.0
0.20
Units
V
μA
Ω
Ω
pF
pF
ns
μm
°C/W
Electrical and Mechanical Specifications
The absolute maximum ratings of the SMP1345-087LF are
provided in Table 1. Electrical specifications are provided in
Table 2.
Typical performance characteristics of the SMP1345-087LF are
illustrated in Figures 1 through 5.
Package Dimensions
The PCB layout footprint for the SMP1345-087LF is provided in
Figure 6. Typical case markings are shown in Figure 7. Package
dimensions for the SMP1345-087LF are provided in Figure 8,
and tape and reel dimensions are provided in Figure 9.
Package and Handling Information
Instructions on the shipping container label regarding exposure
to moisture after the container seal is broken must be followed.
Otherwise, problems related to moisture absorption may occur
when the part is subjected to high temperature during solder
assembly.
The SMP1345-087LF is rated to Moisture Sensitivity Level 1
(MSL1) at 260 °C. It can be used for lead or lead-free soldering.
For additional information, refer to the Skyworks Application
Note, Solder Reflow Information, document number 200164.
Care must be taken when attaching this product, whether it is
done manually or in a production solder reflow environment.
Production quantities of this product are shipped in a standard
tape and reel format.
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
2 June 18, 2013 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • 201546E

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Typical Performance Characteristics
(TA = 25 °C, Unless Otherwise Noted)
DATA SHEET • SMP1345-087LF SURFACE MOUNT PIN DIODE
Figure 1. Total Capacitance vs Reverse Voltage
Figure 2. Series Resistance vs Forward Current @ 100 MHz
Figure 3. Insertion Loss vs Frequency
(IF = 10 mA)
Figure 4. Isolation vs Frequency
(IF = 0 mA)
Figure 5. Return Loss vs Frequency
(IF = 10 mA)
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
201546E • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • June 18, 2013
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DATA SHEET • SMP1345-087LF SURFACE MOUNT PIN DIODE
Figure 6. SKY1345-087LF PCB Layout Footprint
(Top View)
Figure 7. Typical Case Markings
(Top View)
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
4 June 18, 2013 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • 201546E

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DATA SHEET • SMP1345-087LF SURFACE MOUNT PIN DIODE
Figure 8. SMP1345-087LF Package Dimensions
Figure 9. SMP1345-087LF Tape and Reel Dimensions
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
201546E • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • June 18, 2013
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